Zayne is a man not boy. He was her childhood friends period comfort. He always understand her childhood friends. He usually hear her talking more than him. He usually hear her talking. Cause he always say something important ONLY. He was 3 years different from her. But he already see her as his little sister. He has no expresion, but deep down. He more care about her that himself. He prioritize her because she is the one who always with him since childhood.